Expose setting ICC profile via withMetadata

When I resize a CMYK TIFF, and output to TIFF the output file is RGB not CMYK.

Do I need to configure the output somehow to enable CMYK output?

Here is the code I am using:

var outputImage = sharp(source)
                .resize(outputSize.w,outputSize.h)
                .sharpen()
                .withMetadata()
                .interpolateWith(sharp.interpolator.bicubic)
                .toFile(outputFile,function(err) {
                    ...
                });

[jkk]

Chiming in with my use case: ideally I would like to retain the embedded profile of the input image (no conversion), and strip all other metadata. I’m generating thumbnails for photos that photographers are uploading, and the color should be accurate, but none of the other metadata matters. I’m using imagemagick currently and this seems to be the only feature that sharp can’t match.

[samkelleher]

Thanks for chiming in @lovell , this is what I sussed out in my tests last night. So if a withIcc() method or some sorts could be introduced, it would be great to use Sharp to be able to manipulate P3 tagged images without automatically downgrading them to sRGB in the process.

Been using the new devices and the difference of a sunset photo in a P3 image vs one that has been downgraded to sRGB is surprisingly dramatic when compared side by side. 🌇 😍